Correlation of magnetic properties and local atomic structure observed by electron-yield EXAFS in amorphous Co sub 74 Fe sub 6 B sub 15 Si sub 5 thin films

Journal Article · Mon Apr 15 00:00:00 EDT 1991 · Journal of Applied Physics; (USA)

DOI:https://doi.org/10.1063/1.348008· OSTI ID:5493454

Harris, V G; Oliver, S A; Nowak, W B; Vittoria, C ^[1]; Kim, K H; Elam, W T ^[2]

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1. Northeastern University, Boston, Massachusetts 02115 (USA)
2. Naval Research Laboratory, Washington, D.C. 20375-5000 (USA)

Thin-film specimens of amorphous Co{sub 74}Fe{sub 6}B{sub 15}Si{sub 5} were subjected to heat-treatment procedures followed by room-temperature magnetic and structural characterization in an effort to quantitatively correlate magnetic property changes to local atomic structure. Fourier transforms of electron-yield extended x-ray-absorption fine structure spectra show second and higher atomic shell ordering about transition-metal ions to occur at {ital T}{sub ann}{approx}300 {degree}C. This ordering evolves to a body-centered atomic structure with heat treatments at higher temperatures. Accompanying this structural evolution is an expansion of the nearest-neighbor distance, disruption of the spin-wave-resonance spectra, and general deterioration of the soft magnetic properties.

• OSTI ID: 5493454
• Journal Information: Journal of Applied Physics; (USA), Vol. 69:8; ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BORON ALLOYS
CRYSTAL STRUCTURE
HEAT TREATMENTS
MAGNETIC PROPERTIES
X-RAY SPECTRA
COBALT ALLOYS
IRON ALLOYS
SILICON ALLOYS
ABSORPTION SPECTRA
AMORPHOUS STATE
EXCHANGE INTERACTIONS
FILMS
FINE STRUCTURE
FOURIER TRANSFORMATION
MAGNETIZATION
ALLOYS
INTEGRAL TRANSFORMATIONS
INTERACTIONS
PHYSICAL PROPERTIES
SPECTRA
TRANSFORMATIONS
360104* - Metals & Alloys- Physical Properties